Attachment for typewriters



Oct. 13, 1942. os 2,298,742

ATTACHMENTS FOR TYPEWRITERS Filed Oct. 14, 1940 'INVENTOR flmm M Larvae ATTORNEYS in the appended claim.

l atentecl Oct. 13, 1942 UNITED STAT-ES PATENT OFFICE 2,298,742 r Q ATTACHMENT Eon 'rrrnwarrnns Anna M. Larose, The Pan, Manitoba, Canada Application October 14, 1940, Serial No. 361,165

, 1 Claim. (01. 191-189) The present invention relates to attachments for typewriters whereby the user thereof will be able to readily determine at all times the exact.

unused portion of the paper in the machine.

An important object-of the invention is" to provide means associatedwiththe platen of a The invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the faccompanying drawing and specifically pointed out In describing my invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is an elevational view of the invention applied to the knob of a. typewriter platen.

Figure 2 is a front end view of the attachment. Figure 3 is a vertical sectional view taken substantially on line 33 of Figure 2..

Figure 4 is an elevational view partly in section of a modified form of the invention.

Figure 5 is an elevational view of a still further modified form of the invention. 7

Referring to the drawing for a more detailed description thereof, the platen of a typewriter is generally designated by the numeral 8, the same being mounted on a shaft 9 to each end of which is attached a wheel or knob Ill. The knob ill usually includes a collar II which is secured to the shaft I by means of screws or the like II.

In accordance with the present invention, a cover It, preferably formed of rubber or similar material, is placed over the knob ill, said cover being preferably cylindrical-shaped to conform to the shape of the knob and of hollow construction as best shown in Figure 3 of the drawing. integrally formed radially inwardly extending flanges M and ii are provided on each end of the cover and serve to retain the same in position on the knob. It will be observed from an inspection of Figure the flange I i flexes inwardly for gripping engagement with the end of the knob.

In the moulding of the cover the area thereof facing the platen 8 is formed with a smooth surfaceslanting at an angle as indicated at l6, having formed therein or printedthereon suitable indicia designated by the numeral II. It will be readily observed that the indicia are thus placed in a sheltered area so that theyv will not be readily eradicated by contact of the fingers with the cover, the indicia servings. purpose to be hereinafter more fully described. Ihe other portion of the cover is formed with substantially V-shaped corrugations l8, certain of the corrugations being more pronounced as indicated'at l9, said pronounced corrugations being one line with the indicia placed upon the area It. In actual practice, the pronounced corrugationsare of various lengths and may be identified by contrusting colors for indicating various turns of the platen. r V

It will be noted from Figure 1 of the drawing that two lines of numerals are employed with the innermost line indicating the first revolution of the platen roller and the outermost line representing the second revolution of the roller.

When initially placing the paper in the typewriter the indicating device is set -so that zero is at the starting line with each number representing one inch and it will be readily evident and therefore the indicia on the cover are to the user of the machine from the\length of paper used whether the platen is on the first,

second or third turn. It is generally understood that six lines can be written to the inch graduated according to inches. Thus when the numeral 1" on the knob has moved into register with the pointer or other indicating means the typist knows that one inch of paper has been moved through the machine. This feature of the device permits the typist .to set her typing in a uniform way from the moment the paper is inserted in the machine and to allow uniform spacing at boththe top and bottom of the sheet. If, for example, the sheet of paper is 10 inches long and the operator of the machine is interested in determining the space left at the bottom of the sheet only and if av one-inch space is desired at the bottom of the sheet, the operator will remove the sheet when the numeral 9 ap-'-' pears at the chosen starting point. Thus the operator does not have to constantly look at the paper. However, if there is indicated that 8% inches of the paper has already been fed 7 3 of the drawing that through the typewriter, the operator will know 2 spasms that three lines may be written in order to remove sheet of paper when the numeral 9 appears on the'cover thereby'leaving a oneinch space at-the bottom. This device is especially important where several sheets or fig uresareusedandwhenthesefigureshaveto be totalled at the bottom, of the sheet. I: the

operator is continuously aware of the length of the paper left he can readily tell at a glance the number oi lines he may before it is necessary-to removethe paper.

Bypermittingthetypisttoreadilyandata. glance ascertain either the exact amount at.

paper that has been fed through the machine or the exact amount remaining in the machine,

it is possible for several short forms to be written on along sheet and the instant device permits the typist to arrange the. forms uniiormly on the sheet so thatthey will have even borders alter the large-sheet has been foot into sections; For instance. tour three inch. iorms inch lengths-after the forms are typed. Thus,

25 edges thereof.

inserting and removing carbons;

tly dimculttotwc at the bin d the typist often ilridsit necesthe sheet withlone-hand when The cover being iormcdf'od rub-= ber acts as a firm and soit srip that-is appliedtotheknobs 1- In Figure 4 of the drawing. there is shown are made, this procedure saves much tion eliminates theuse of a cover since the indicia are applied directly to the kn b.

In Figure 5 of the drawing there is shown a still further modified iorm'oi the invention in which the rubber ring 23 has been dispensed with and in place thereof the knob has been formed with corrugations 24 similar to the corrugations formed in the rubber cover and with certain of-the corrugations more pronounced,

ll'i asindicated at I, in line with the indicia I.

The indicia it are on anarea similar to the forms previously described and the method of determining the unused portion or the paper in the machine is the same as described in conmotion with the preferred iorm.

Any form of the invention above described and illustrated in the drawing will indicate the position of a typing sheet at all times thereby enabling the operator oi the machine'to have 2 the lines oi typing evenly distributed on the sheet which is especially desirable'when compiling a several page report, manuscript and the like. vlachpegewillhavethefirstam'llastlinesoi wins equall spaced from the top and bottom Also it will be understood, of course, by those skilled inthe art that variations in the here,- lnabove described device involving the substitution oi substantial equivalents for the devices described are intended to be comprehended within the spirit od'the present invention and that the invention is capable of extended application and is not confined to'the exact showing of the drawing nor to the precise construction described and,vthereiore, such changes and modiflcations may be made therein as do not afiect the spirit ottthe invention nor exceed the scope thereoi as expressed in the appended claim What is claimed is:

40 In a-typewriting machine, the combination i with a. revoluble'platen having a circular fiatknobfixed at one end thereof, of a resilient cover member removably fitted on the said knob, the

- said cover embracingthe periphery oi the knob and having inwardly directed end flanges disposed against the end iacea o! the knob, the

exterior periphery ofthe cover being divided circumierentially and shaped to form an annular finger portion provided with transverse corrua modified form oi the invention inwhich' the w gations, and a smooth annular section having platen knob, which is designated by the numeral ll, is formed with a slanting area II on which are placed theindicia 22. A rubber-ring II is suitably secured on theknob to form a gripping medium. It is,oi course, to -be understood that the knob 26 have its periphery cut out for V receivingthe ring it. term oi'the inven- -a taper toward the inner end of the knob and having circularly arranged consecutively numbered graduations designating unitormlyspaced divisions oi the circumference 5 oi the platen for indicating the relative position oi-a work sheet on the said platen.

ANNA M. LAR'OBE. 

